decode method is only used for big int and other decode method is only used in unit test. I remove the useless method and we can remove mempool parameter from decode method. --------- Co-authored-by: yiguolei <yiguolei@gmail.com>
decode method is only used for big int and other decode method is only used in unit test. I remove the useless method and we can remove mempool parameter from decode method. --------- Co-authored-by: yiguolei <yiguolei@gmail.com>